Subtract 90/30 from 12/10
1st number: 1 2/10, 2nd number: 3 0/30
12/10 - 90/30 is -9/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
12/10 = 12 × 3/10 × 3 = 36/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Subtract the two like fractions:
36/30 - 90/30 = 36 - 90/30 = -54/30 - After reducing the fraction, the answer is -9/5
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